Duplex filled-sack-sewing machine.



D. S. SEYMOUR.

DUPLEX FILLED SACK SEWING MACHINE.

APPLICATION FILED JUNE 13. 1912.

LQSZFZ'M, Patented Aug. 21,1917.

4 SHEETSSHEET I.

UIMIIIIIIIH I 1 D. SVSEYMOUR.

DUPLEX FILLED SACK SEWING MACHINE.

APPLICATION HLED JUNE 13, 1912.

1 37,? 1 0. PatentedAug. 21, 1917.

4 SHEETSSHEET 2.

D. S. SEYMOUR.

DUPLEX FILLED SACK SEWING MACHINE.

APPLICATION FILED JUNE 13. I912.

1,237,71Q. I Patented Aug. 21, 1917.

4 SHEETS-SHEET 3.

D. S. SEYMOUR.

DUPLEX FILLED SACK SEWING MACHINE.

APPLICATION FILED JUNE 13, 1912.

Patented Aug. 21, 1917.

4 SHEETS -SHEET 4- IINITE DUDLEY S. SEYMOUR, OF OAK PARK, ILLINO IS, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DUPLEX FILLED-SACK-SEWING MACHINE.

Specification of Letters Patent.

Patented Aug. 21, 1917.

Application filed June 13, 1912. Serial No, 703,492.

To all whom it may concern:

Be it known that I, DUDLEY S. Sermons, a citizen of the United States, residing at Oak-Park, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Duplex Filled-Sac Sewing Machines, of which the following 1s a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in filled sack sewing machines, and more especially to machines of this character which are used for closing filled sacks and cutting the chain of stitches extending from the sack.

An object of the invention is to provide two machines which are arranged so that one machine will deliver to the other, whereby an inner sack may be stitched on one machine and an outer sack subsequently stitched on another machine.

A further object of the invention is to provide controlling devices for the conveyers and for the stitching mechanism, which may be .so manipulated from the two stitching stations, that one conveyer may be actuated to deliver the sack to the stitching mechanism directly over the same, without actuating the other conveyer, and which may also be so actuated that the two conveyers may be run in unison to convey the sack from one stitching mechanism to the other, after which the first conveyer may be rendered idle, while the second conveyer cooperates with the stitching mechanism over the same for conveying the filled sack past such stitching mechanism.

These and other objects will in part be obvious, and will in part be hereinafter more fully described.

In the drawings which show by way of illustration one embodiment of the invention;

Figure 1 is a front view of a tandem filled sack sewing machine, embodying my improvements;

Fig. 2 is a view more or less diagrammatic, showing in front elevation, the controlling devices for the two machines;

Fig. 3 is an enlarged detail showing in front elevation the limiting devices and coacting members whereby the conveyer may be controlled independently of the stitching mechanism;

Fig. 4 is a side view of the parts shown in Fig. 3;

Fig. 5 is a plan view partly in section and partly more or less diagrammatic, showing the controlling mechanism for the two'machines;

Fig. 6 is a side view of the same;

Fig. 7 is an enlarged detail showing the clutches for controlling the conveyer and the stitching mechanism;

Fig. 8 is an enlarged detail, showing the cutter for clipping the chain of stitches.

In carrying out my invention, I have attached two filled sack sewing machines together, so that the conveyer of one machinewill deliver a filled sack on to the conveyer of the other machine. Each filled sack sewing machine includes a stitching-mechanism and an independent driving shaft therefor, although it is obvious that from certain aspects of the invention, a driving shaft and motor may be used with the two-machines. In addition to the stitching mechanism, each machine is provided with a clipper for clipping the chain of stitches so as to separate the filled sack from the stitching mechanism, whereby the stitching mechanism may be stopped and the sack conveyed away from the same. I further provide the two machines with controlling devices which are so connected together and constructed, that the conveyer of the first machine may be set into operation independently of the other conveyer and independently of either stitching mechanism. As soon as the sack is conveyed to the stitching point of the first machine, the controlling devices therefor may be further actuated so as to set said stitching mechanism into operation, which will stitch the inner sack and cause the chain of stitches to be severed, after which the stitch? ing mechanism may be stopped, while the conveyer may continue to move to carry the filled sack from the stitching mechanism. The controlling devices at the other stitching station may then be manipulated so as to cause both conveyers to travel in unison or simultaneously, while the stitching mechanisms at both stations are idle. As soon as the sack is brought from one conveyer to the other, and to the second stitching staling devices may cause the second stitching mechanism to operate to close the outer filled sack and to cut the chain of stitches, after the sack is closed, when the stitching mechanism may be stopped, and the conveyer either stopped or caused to carry the sack away from the stitching mechanism.

The above mechanism is especially 'designed for the use of a single operator wherein the sack is stitched at first one station and the operator moves to the second station, from which station the conveyers may be so controlled as to cause the filled stitched sack to pass to the second stitching mechanism or station, which is now under the control of the operator.

Referring more in detail to the drawings, I have shown in Fig. 1 two filled sack sewing machines which are coupled together and provided with controlling devices of the character referred to above. Each machine consists of a' table 1, which is carried by suitable standards 2. Extending "upwardly from the table 1 is a vertical bracket on which is mounted a sewing machine 4, which may be vertically adjusted thereon. This sewing machine includes a needle and complemental table.

stitch forming mechanism for forming a chain of stitches. of the usual character, and is set so that the needle willf reciprocate substantially in a horizontal plane, as is common in this type of machine. Directly underneath the sewing machine which overhangs the table 1, is a confveyer 5, which consists of an endless belt running over pulleys 6. A supporting table 7 for the .conveyer belt extends substantially.

tor isconnected by a suitable beltto a' belt pulley 9, loosely mounted on a vertical shaft 10. The shaft 10 is mounted in suitable bearings and is connected by a train of gears with the endless conveyer, so that when the shaft 10 is actuated, the conveyer connected thereto will also be caused to travel about the pulleys 6, 6, and across the supporting table 7. The mainshaft of the sewing. machine is connected by a suitable belt with a pulley 11, which is splined to a shaft 12 and is journaled in a bearing carried by a bracket attached to the base of the sewing machine, so that when the sewing machine is adjusted vertically on the bracket 3', the

.pulley 11 will slide. along the shaft 12 and permit of such adjustment.

The conveyer and the sewing mechanism in detail in Fig. 7. As above noted, the

The sewing machine is pulley 9 is free on the shaft 10., A pulle 11 1s fixed to the shaft 10 and this she. 10 is so mounted that it may be moved endwise n its supporting bearings, lever 13 is pivoted to a bracket 14 and at its inner end said lever extends underthe lower end of the shaft 12. The shaft 10 as above noted, is geared to the conveyer, whilethe pulley 11 is connected with the stitching mechanism of thesewin machine. The parts are so disposed that t e friction disks 16 and 17 as well as the pulleys 9 and 11, are normally separated. When the lever 13 is swung about its fulcrum so as to raise the pulley 9, said pulley 9 will contact with the pulleyll and the driving motion of the pulley 9 will be conveyed to the pulley 11, which in turn will operate the shaft 10, and the conveyer.

A further downward movement of the outer end of the lever 13 will raise the shaft 10 bodily so that the friction disk 16 will engage the friction disk 17, and cause the rotating movement of the driving pulley 9 to be imparted to the driving pulley 11 for the stitching mechanism.

From the above description, it will be apparent that I have provided a controlling lever which when thrown to a certain ex tent, will control only the conveyer, andtrol the stitching mechanism.

Each sewing machine includes a feeding mechanism having a feeddog l8 and a feed when thrown to a further extent, will condog 19. The throat plate through which In order to tilt the sack after leaving the.

stitching mechanism to automatically throw the chain into the cutter, the supporting table 7 for the endless conveyer, is provided with a raised portion 22 (see Fig. 1). This raised portion extends only part way across the supporting table, and tilts the sack so as to bring about the positioning of the chain of stitches for the purpose stated. This cutting mechanism forms no partof the present invention, but is shown, de-

scribed and claimed in a co-pending application of Chester McNeil, Serial No. 536,669,

filed January 6th, 1910.

While I have shown more or less'diagramforms no part of the present invention," but.

is shown, described, and claimed in my copending application Serial No. 701,519, filed June 4,1912.

The two filled sack sewing machines so far as described, are identical in construction and are placed side by side, so that one conveyer will deliver directly on to the other conveyer. For the sake of clearness in understanding the cooperative action of the two machines, I will refer to the stitching mechanism of the right-hand machine as .station A, and the conveyer indicated at B,

as the conveyer for station A, while the stitching mechanism of the left-hand machine will be referred to as station C, and the conveyer indicated at D, as the conveyer therefor. e 1

In order to facilitate the delivering of. the filled sack from one conveyer to the. other, I have provided a supporting roll 23, which is located between the ,pulleys 6, 6, of the two conveyors, and serves as a rest for the filled sack as it passes from one conveyer to the other. As a means for controlling the stitchmg mechanism and the conveyer at station I A, I have provided a knee shift 24: which is attached to a rock shaft 25. The rock shaft 25 has an arm 26 rigidly attached thereto, and a rod 27 secured'at one end to the arm 26, and at its other end to the lever 13, which controls the clutches for the stitching mechanism at station A and the conveyer B. By manipulating the'knee shift 24, the

shaft 26 is rocked and the lever 13 oscillated so as to control in succession the starting of the conveyer -B and the stitching.

mechanism at station A.

As a means for controlling the conveyer B from station C, I have mounted on the frame of the machine containing station G, a rock shaft 28 which is connected to a knee shift 29. An arm 30 secured to the shaft 28, extends upwardly therefrom, and a-link 31 is pivoted to the arm adjacent-its free end. An arm 32 is freely mounted on the shaft 25, and is pivoted at its free end to the other end of the link 31. An arm 33 is rigidly attached to the shaft 25, and has a laterally projecting or deflected part 34:,

which carries a stop screw 35. This stop screw is located in the path of travel of the arm 32.

When the knee shift 29 is moved, the link will rock the arm 32, on the shaft 25 until said arm 32 engages the stop screw 35, after which the arm 33 will be oscillated and will impart movements to the shaft, WhlCll in turn will movethe lever 13. A stop screw 36 carried by the frame of the machine, is located in the path of travel of the arm 32, and may be so adjusted that the arm 32 can only be swung far enough to shift the lever 13 to cause the conveyer B to be set into action.

From the above construction, it will be apparent that the manipulation of the knee shift 24 is entirely free of the knee shift 29, and furthermore, that the knee shift 29 can only be actuated a sufficient distance to control the conveyer B. The stitching mechanism at the station C and the conveyer D therefor, are controlled by a rock shaft 37 and a foot lever 38, which is attached there- The rock shaft 37 has an arm 39 rigidly attached thereto, and a rod or link 40 connects the arm 39 with'the lever 13, which controls the clutches for the stitching mechanism at station C, and the conveyer D.

In the operation of my device, a filled sack is placed on the conveyer B, after which the knee shift 24: is movedto the right a sufficient distance to swing the lever 13 so as to set into action the conveyer, which brings the sack to the stitching station A. As soon as the sack approaches the stitching station, the knee lever 24: is moved to the right further, which swings the lever 13 to a greater extent and causes the stitching mechanism to be set into action. The conveyer B and the stitching mechanism at the station A, will both be in actuation while the conveyer D and the stitching mechanism at the station C are idle.v As soon as the inner sack has been closed and the chain of stitches lea-ding therefrom automatically clipped, the stitching mechanism is stopped by the movement of the knee shift 24 in the opposite direction, and the conveyer B may also be stopped at this time. The operator then takes his position at station C, and

by moving the knee shift 29,sets into ac 0, the outer sack is positioned for the stitching mechanism and the treadle 38 depressed so as to set into action the stitching mechanism at the station C. The knee shift 29 may now be released and the conveyer B stopped. When the second sack is stitched and the thread clipped the treadle is released sufliciently to allow the stitching mechanism to stop and when the sack is in proper position for removal, the treadle or foot lever 38 is released, which stops the conveyer D.

The conveyer B is adjusted vertically on the supporting frame by screws 40, which have common means for operating the same sothat both ends of the conveyer may be simultaneously raised or lowered. The sewing machine head 4 is also adjustably mounted on the bracket 3, as above noted. These separate adjustments for the sewing head and the conveyer in the separate machines, form no part of the present invention, as the same is shown, described and claimed in my co-pending application Serial 536,765, filed January 6th, 1910. There is however, a distinct advantage in these adjustments in the combined apparatus for sewing an inner and an outer sack, as by these ad ustments the sewing and clipping mechanism in one machine may be set. so as to stitch and clip in a different horizontal plane from the other, so that the inner sack may be stitched at one level, and the outer sack stitched at a higher level. This same result may be accomplished by adjusting the con-. veyers so as to set the same at slightly different levels.

From the above construction, it will be apparent that I have provided a mechanism wherein two filled sack sewing machines may be controlled by a single operator for stitching an inner and an outer sack, without requiring the lifting of the sacks except the placin of the same on the conveyer and the removing of the same therefrom, after the final operation is completed.

It is obvious that minor changes in the details of construction may be made with out departing from the spirit of the invention as set forth in the appended claims.

Having thus particularly described. my

invention, what I claim as new and desire to secure by Letters Patent, is

, 1. The combination with two separate sewing stations, each of which is provided with stitching mechanism, of independent conveyers therefor, said conveyers being arranged so that one conveyer delivers the articles to be stitched on to the other conveyer, and means for successively starting and stopping the conveyers and the stitching mechanisms for each station.

2. The combination with two separate sewing stations, each of. which is provided with stitching mechanism, of independent conveyers thereof, said conveyers being arranged so that one conveyer delivers the articles to be stitched on to the other conveyer, means for successlvely starting and stopping veyers may be controlled from one of the stations, and means whereby said conveyers may be separately controlled from one of said stations.

4. The combination with two separated sewing stations, of an independent conveyer for each station arranged so that one conveyer delivers to the other, separate means for successively starting each conveyer and the sewing mechanism at the station associated therewith, and means for controlling the movements of the conveyers independently of the operation of the sewing mechanisms.

5. A filled sack sewing apparatus, including two separated sewing machines, each of which is provided with stitching mechanism and a clipping mechanism, an independent conveyer for each sewing machine, said conveyers being located beneath the stitching mechanism and arranged so that one conveyer delivers to the other, and means for independently controlling the stitching mechanisms and the conveyers.

6. A filled sack sewing apparatus including two separated sewing machines, each of which is provided with stitching mechanism and a clipping mechanism, an independent conveyer for each sewing machine,

said conveyers being located beneath the stitching mechanism and arranged so that one conveyer delivers to the other, and means for successively starting each conveyer and the stitching mechanism associated therewith.

7. A filled sack sewing apparatus including two separated sewing machines, each of which is provided with stitching mechanism and a clipping mechanism, an independent conveyer for each sewing machine, said conveyers being located beneath the stitching mechanism and arranged so that one conveyer delivers to the other, means for successively starting each conveyer and the stitching mechanism associated therewith,

and means for operating the first conveyer from a point adjacent the controlling devices for the second conveyer.

8. A filled sack sewing apparatus including two separated sewing machines, each of which is provided with stitching mechanism and a clipping mechanism, an independent conveyer for each sewing machine, said conveyers being located beneath the stitching mechanism and arranged so that one conveyer-delivers to the other, means for start ing the first conveyer and the stitching mechanism associated therewith in success1on, means for starting the. second conveyer and the stitching mechanism associated therewith in succession, and means adjacent the controlling devices for the second conveyer, for starting the first conveyer.

9. A filled sack sewing apparatus including two separated sewing machines, each of which is provided with stitching mechanism and a clipping mechanism, an independent conveyer for each sewing machine, said conveyers being located beneath the stitching mechanism and arranged so that one conveyer delivers to the other, means for starting the first conveyer and the stitching mechanism associated therewith in succession, means for starting the second conveyer and the stitching mechanism' associated therewith in succession, means adjacent the controlling devices for the second conveyer for starting the first conveyer, and devices for limiting the movement of the last named means for controlling the first conveyer, for preventing the starting of the stitching mechanism associated therewith.

10. In a filled bag sewing apparatus, a plurality of sewing machines each including sewing mechanism and feeding mechanism, a conveying mechanism for moving filled sacks past said sewing machines in succession, and means for supporting the sewing machines and conveying mechanisms whereby lines of stitching may be formed at different heights on the filled sacks and inner and outer sacks be successively sewed on the apparatus.

In testimony ture, in the presence of two witnesses.

DUDLEY S. SEYMOUR.

Witnesses:

C. MCNEIL, A. B. CLOTI-IIER.

whereof, I afiix my signa- 

